THE TEMPORAL AND SPECTRAL CHARACTERISTICS OF "FAST RISE AND EXPONENTIAL DECAY" GAMMA-RAY BURST PULSES

doi:10.1088/0004-637X/718/2/894

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	THE TEMPORAL AND SPECTRAL CHARACTERISTICS OF "FAST RISE AND EXPONENTIAL DECAY" GAMMA-RAY BURST PULSES
	Peng, ZY 1; Yin, Y 2; Bi, XW 3; Zhao XH(赵晓红)4 ; Fang, LM 5; Bao, YY 6; Ma, L 1; Ma, L (reprint author), Yunnan Normal Univ, Dept Phys, Kunming 650092, Peoples R China.
发表期刊	ASTROPHYSICAL JOURNAL
	2010-08-01
卷号	718 期号:2 页码:894-898
DOI	10.1088/0004-637X/718/2/894
产权排序	第4完成单位
收录类别	SCI
关键词	Gamma-ray Burst: General Methods: Statistical
摘要	In this paper, we have analyzed the temporal and spectral behavior of 52 fast rise and exponential decay (FRED) pulses in 48 long-duration gamma-ray bursts (GRBs) observed by the CGRO/BATSE, using a pulse model with two shape parameters and the Band model with three shape parameters, respectively. It is found that these FRED pulses are distinguished both temporally and spectrally from those in the long-lag pulses. In contrast to the long-lag pulses, only one parameter pair indicates an evident correlation among the five parameters, which suggests that at least four parameters are needed to model burst temporal and spectral behavior. In addition, our studies reveal that these FRED pulses have the following correlated properties: (1) long-duration pulses have harder spectra and are less luminous than short-duration pulses and (2) the more asymmetric the pulses are, the steeper are the evolutionary curves of the peak energy (E(p)) in the nu f(nu) spectrum within the pulse decay phase. Our statistical results give some constraints on the current GRB models.
项目资助者	Education Department of Yunnan Province [08Y0129, 09Y0414] ; National Natural Science Foundation of China [10778726] ; key project of applied basic study of Yunnan Province [2008CC011] ; Natural Science Fund of Yunnan Province [2009ZC060M]
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-637X
URL	查看原文
WOS记录号	WOS:000279976200024
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BATSE ; SPECTROSCOPY ; LUMINOSITY ; JETS ; LAG
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/5390
专题	南方基地
通讯作者	Ma, L (reprint author), Yunnan Normal Univ, Dept Phys, Kunming 650092, Peoples R China.
作者单位	1.Department of Physics, Yunnan Normal University, Kunming 650092, China 2.Department of Physics, Liupanshui Normal College, Liupanshui 553004, China 3.Department of Physics, Honghe University, Mengzi 661100, China 4.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China 5.Department of Physics, Guangdong Institute of Education, Guangzhou 510303, China 6.Department of Physics, Yuxi Normal College, Yuxi 653100, China
推荐引用方式 GB/T 7714	Peng, ZY,Yin, Y,Bi, XW,et al. THE TEMPORAL AND SPECTRAL CHARACTERISTICS OF "FAST RISE AND EXPONENTIAL DECAY" GAMMA-RAY BURST PULSES[J]. ASTROPHYSICAL JOURNAL,2010,718(2):894-898.
APA	Peng, ZY.,Yin, Y.,Bi, XW.,Zhao XH.,Fang, LM.,...&Ma, L .(2010).THE TEMPORAL AND SPECTRAL CHARACTERISTICS OF "FAST RISE AND EXPONENTIAL DECAY" GAMMA-RAY BURST PULSES.ASTROPHYSICAL JOURNAL,718(2),894-898.
MLA	Peng, ZY,et al."THE TEMPORAL AND SPECTRAL CHARACTERISTICS OF "FAST RISE AND EXPONENTIAL DECAY" GAMMA-RAY BURST PULSES".ASTROPHYSICAL JOURNAL 718.2(2010):894-898.

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